linux-kernel - [PATCH] drm/i915: Convert timers to use timer

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Date:   Wed, 4 Oct 2017 17:54:07 -0700
From:   Kees Cook <keescook@...omium.org>
To:     linux-kernel@...r.kernel.org
Cc:     Daniel Vetter <daniel.vetter@...el.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        David Airlie <airlied@...ux.ie>,
        Chris Wilson <chris@...is-wilson.co.uk>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Tvrtko Ursulin <tvrtko.ursulin@...el.com>,
        Oscar Mateo <oscar.mateo@...el.com>,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH] drm/i915: Convert timers to use timer_setup()

In preparation for unconditionally passing the struct timer_list pointer to
all timer callbacks, switch to using the new timer_setup() and from_timer()
to pass the timer pointer explicitly.

Cc: Daniel Vetter <daniel.vetter@...el.com>
Cc: Jani Nikula <jani.nikula@...ux.intel.com>
Cc: David Airlie <airlied@...ux.ie>
Cc: Chris Wilson <chris@...is-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@...el.com>
Cc: Oscar Mateo <oscar.mateo@...el.com>
Cc: intel-gfx@...ts.freedesktop.org
Cc: dri-devel@...ts.freedesktop.org
Cc: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Kees Cook <keescook@...omium.org>
---
This requires commit 686fef928bba ("timer: Prepare to change timer
callback argument type") in v4.14-rc3, but should be otherwise
stand-alone.
---
 drivers/gpu/drm/i915/selftests/mock_engine.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/selftests/mock_engine.c b/drivers/gpu/drm/i915/selftests/mock_engine.c
index fc0fd7498689..331c2b09869e 100644
--- a/drivers/gpu/drm/i915/selftests/mock_engine.c
+++ b/drivers/gpu/drm/i915/selftests/mock_engine.c
@@ -32,9 +32,9 @@ static struct mock_request *first_request(struct mock_engine *engine)
 					link);
 }
 
-static void hw_delay_complete(unsigned long data)
+static void hw_delay_complete(struct timer_list *t)
 {
-	struct mock_engine *engine = (typeof(engine))data;
+	struct mock_engine *engine = from_timer(engine, t, hw_delay);
 	struct mock_request *request;
 
 	spin_lock(&engine->hw_lock);
@@ -161,9 +161,7 @@ struct intel_engine_cs *mock_engine(struct drm_i915_private *i915,
 
 	/* fake hw queue */
 	spin_lock_init(&engine->hw_lock);
-	setup_timer(&engine->hw_delay,
-		    hw_delay_complete,
-		    (unsigned long)engine);
+	timer_setup(&engine->hw_delay, hw_delay_complete, 0);
 	INIT_LIST_HEAD(&engine->hw_queue);
 
 	return &engine->base;
-- 
2.7.4


-- 
Kees Cook
Pixel Security